ES2284172T3 - Configuracion de antenas para un sistema electronico de vigilancia de articulos con distribucion del campo de interrogacion mejorada. - Google Patents

Configuracion de antenas para un sistema electronico de vigilancia de articulos con distribucion del campo de interrogacion mejorada. Download PDF

Info

Publication number
ES2284172T3
ES2284172T3 ES96920388T ES96920388T ES2284172T3 ES 2284172 T3 ES2284172 T3 ES 2284172T3 ES 96920388 T ES96920388 T ES 96920388T ES 96920388 T ES96920388 T ES 96920388T ES 2284172 T3 ES2284172 T3 ES 2284172T3
Authority
ES
Spain
Prior art keywords
segment
loop
segments
extends
loops
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES96920388T
Other languages
English (en)
Spanish (es)
Inventor
Jorge Alicot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sensormatic Electronics Corp
Original Assignee
Sensormatic Electronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sensormatic Electronics Corp filed Critical Sensormatic Electronics Corp
Application granted granted Critical
Publication of ES2284172T3 publication Critical patent/ES2284172T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2477—Antenna or antenna activator circuit
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/04—Screened antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Burglar Alarm Systems (AREA)
ES96920388T 1995-05-30 1996-05-22 Configuracion de antenas para un sistema electronico de vigilancia de articulos con distribucion del campo de interrogacion mejorada. Expired - Lifetime ES2284172T3 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45296895A 1995-05-30 1995-05-30
US452968 1995-05-30

Publications (1)

Publication Number Publication Date
ES2284172T3 true ES2284172T3 (es) 2007-11-01

Family

ID=23798701

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96920388T Expired - Lifetime ES2284172T3 (es) 1995-05-30 1996-05-22 Configuracion de antenas para un sistema electronico de vigilancia de articulos con distribucion del campo de interrogacion mejorada.

Country Status (10)

Country Link
US (2) US6081238A (fr)
EP (1) EP0829108B1 (fr)
JP (1) JP3966556B2 (fr)
CN (1) CN1185865A (fr)
AR (1) AR002136A1 (fr)
AU (1) AU702622B2 (fr)
BR (1) BR9609286A (fr)
DE (1) DE69636999T2 (fr)
ES (1) ES2284172T3 (fr)
WO (1) WO1996038877A1 (fr)

Families Citing this family (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6118378A (en) * 1997-11-28 2000-09-12 Sensormatic Electronics Corporation Pulsed magnetic EAS system incorporating single antenna with independent phasing
US6570541B2 (en) 1998-05-18 2003-05-27 Db Tag, Inc. Systems and methods for wirelessly projecting power using multiple in-phase current loops
US6388628B1 (en) * 1998-05-18 2002-05-14 Db Tag, Inc. Systems and methods for wirelessly projecting power using in-phase current loops
JP2002534878A (ja) * 1998-12-30 2002-10-15 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ ３送信コイル構成のトランスポンダ通信ステーション
US6166637A (en) * 1999-02-09 2000-12-26 Micron Technology, Inc. Apparatuses for electronic identification of a plurality of passing units and methods of electronic identification of a plurality of passing units
ITAR20000040A1 (it) * 2000-09-08 2002-03-08 Alessandro Manneschi Trasduttore lettore di transponder per il controllo dei passaggi
DE60144402D1 (de) * 2000-10-20 2011-05-19 Promega Corp Hochfrequenzidenfikationsverfahren und System zum Verteilen von Produkten
USRE47599E1 (en) 2000-10-20 2019-09-10 Promega Corporation RF point of sale and delivery method and system using communication with remote computer and having features to read a large number of RF tags
US20020183882A1 (en) 2000-10-20 2002-12-05 Michael Dearing RF point of sale and delivery method and system using communication with remote computer and having features to read a large number of RF tags
ES2614734T3 (es) 2001-03-26 2017-06-01 Sensormatic Electronics, LLC Filtros de detección digital para la vigilancia electrónica de artículos
JP4035446B2 (ja) * 2001-05-04 2008-01-23 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 固定式データキャリアとの通信用のコイル構造を有する通信装置
US20020193685A1 (en) 2001-06-08 2002-12-19 Calypso Medical, Inc. Guided Radiation Therapy System
US6693557B2 (en) * 2001-09-27 2004-02-17 Wavetronix Llc Vehicular traffic sensor
US6822570B2 (en) 2001-12-20 2004-11-23 Calypso Medical Technologies, Inc. System for spatially adjustable excitation of leadless miniature marker
US6753821B2 (en) * 2002-04-22 2004-06-22 Wg Security Products, Inc. Method and arrangement of antenna system of EAS
US6836216B2 (en) * 2002-05-09 2004-12-28 Electronic Article Surveillance Technologies, Ltd. Electronic article surveillance system
US6947860B2 (en) * 2002-08-09 2005-09-20 Sensormatic Electronics Corporation Electronic article surveillance system stationary tag response canceller
WO2004040698A1 (fr) * 2002-10-31 2004-05-13 Em Microelectronic-Marin Sa Lecteur ou emetteur et/ou recepteur equipe d'une antenne blindee
US9248003B2 (en) * 2002-12-30 2016-02-02 Varian Medical Systems, Inc. Receiver used in marker localization sensing system and tunable to marker frequency
US7926491B2 (en) * 2002-12-31 2011-04-19 Calypso Medical Technologies, Inc. Method and apparatus for sensing field strength signals to estimate location of a wireless implantable marker
US7912529B2 (en) * 2002-12-30 2011-03-22 Calypso Medical Technologies, Inc. Panel-type sensor/source array assembly
US7091858B2 (en) * 2003-01-14 2006-08-15 Sensormatic Electronics Corporation Wide exit electronic article surveillance antenna system
US7019651B2 (en) * 2003-06-16 2006-03-28 Sensormatic Electronics Corporation EAS and RFID systems incorporating field canceling core antennas
US7119692B2 (en) * 2003-11-10 2006-10-10 3M Innovative Properties Company System for detecting radio-frequency identification tags
US7372364B2 (en) 2003-11-10 2008-05-13 3M Innovative Properties Company Algorithm for RFID security
FR2864354B1 (fr) * 2003-12-17 2006-03-24 Commissariat Energie Atomique Antenne plane a champ tournant, comportant une boucle centrale et des boucles excentrees, et systeme d'identification par radiofrequence
US7684849B2 (en) * 2003-12-31 2010-03-23 Calypso Medical Technologies, Inc. Marker localization sensing system synchronized with radiation source
US20050154284A1 (en) * 2003-12-31 2005-07-14 Wright J. N. Method and system for calibration of a marker localization sensing array
US20050154280A1 (en) * 2003-12-31 2005-07-14 Wright J. N. Receiver used in marker localization sensing system
WO2006002396A2 (fr) 2004-06-24 2006-01-05 Calypso Medical Technologies, Inc. Systemes et methodes permettant de traiter le poumon d'un patient par intervention chirurgicale ou radiotherapie guidee
DE102004035621A1 (de) * 2004-07-22 2006-03-16 Feig Electronic Gmbh Antennenanordnung für grosse zusammenhängende Erfassungsräume
US20090216115A1 (en) * 2004-07-23 2009-08-27 Calypso Medical Technologies, Inc. Anchoring wirless markers within a human body
EP1778086A4 (fr) * 2004-07-23 2009-03-18 Calypso Med Technologies Inc Systemes et procedes de poursuite en temps reel de cibles en radiotherapie et autres applications medicales
JP2008507367A (ja) 2004-07-23 2008-03-13 カリプソー メディカル テクノロジーズ インコーポレイテッド 患者内のターゲットを治療するための統合放射線治療システム及び方法
US7899513B2 (en) * 2004-07-23 2011-03-01 Calypso Medical Technologies, Inc. Modular software system for guided radiation therapy
US8095203B2 (en) * 2004-07-23 2012-01-10 Varian Medical Systems, Inc. Data processing for real-time tracking of a target in radiation therapy
US9586059B2 (en) * 2004-07-23 2017-03-07 Varian Medical Systems, Inc. User interface for guided radiation therapy
EP1771223A4 (fr) * 2004-07-23 2009-04-22 Calypso Med Technologies Inc Appareils et methodes pour une per d'objets dans des patients
US8437449B2 (en) 2004-07-23 2013-05-07 Varian Medical Systems, Inc. Dynamic/adaptive treatment planning for radiation therapy
US7591415B2 (en) * 2004-09-28 2009-09-22 3M Innovative Properties Company Passport reader for processing a passport having an RFID element
NL1028330C2 (nl) * 2005-02-18 2006-08-21 Nedap Nv Smart Shelf.
JP4226572B2 (ja) 2005-05-11 2009-02-18 株式会社日立国際電気 リーダライタ装置
WO2007006159A1 (fr) * 2005-07-14 2007-01-18 Lyngsoe Systems Ltd. Excitation magnetique en boucle double pour indicateur de courrier
US7648065B2 (en) * 2005-08-31 2010-01-19 The Stanley Works Storage cabinet with improved RFID antenna system
WO2007030003A1 (fr) * 2005-09-09 2007-03-15 Stichting Astron Antenne modulaire et système et procédé de détection d'objets
WO2007035798A2 (fr) 2005-09-19 2007-03-29 Calypso Medical Technologies, Inc. Appareils et procedes permettant d'implanter des objets, tels que des marqueurs d'implantation bronchoscopique, dans les poumons de patients
US20090216113A1 (en) 2005-11-17 2009-08-27 Eric Meier Apparatus and Methods for Using an Electromagnetic Transponder in Orthopedic Procedures
US7733290B2 (en) * 2005-12-19 2010-06-08 Sensormatic Electronics, LLC Merchandise surveillance system antenna and method
US20070252001A1 (en) * 2006-04-25 2007-11-01 Kail Kevin J Access control system with RFID and biometric facial recognition
US7710275B2 (en) * 2007-03-16 2010-05-04 Promega Corporation RFID reader enclosure and man-o-war RFID reader system
EP2153491A2 (fr) 2007-06-08 2010-02-17 Checkpoint Systems, Inc. Système et procédé de détection eas dynamique
US8933790B2 (en) * 2007-06-08 2015-01-13 Checkpoint Systems, Inc. Phase coupler for rotating fields
US7796041B2 (en) * 2008-01-18 2010-09-14 Laird Technologies, Inc. Planar distributed radio-frequency identification (RFID) antenna assemblies
EP2109059B1 (fr) * 2008-04-09 2017-05-17 Cavea Identification GmbH Récipient destiné à la réception d'articles
EP2293720B1 (fr) 2008-06-05 2021-02-24 Varian Medical Systems, Inc. Compensation de mouvements pour imagerie médicale et systèmes et procédés associés
US9943704B1 (en) 2009-01-21 2018-04-17 Varian Medical Systems, Inc. Method and system for fiducials contained in removable device for radiation therapy
JP5423023B2 (ja) * 2009-02-06 2014-02-19 富士ゼロックス株式会社 物体検知装置
FR2954551B1 (fr) * 2009-12-21 2012-08-17 Commissariat Energie Atomique Dispositif d'echange de donnees sans contact securise entre un lecteur et une carte
WO2012045092A2 (fr) 2010-10-01 2012-04-05 Calypso Medical Technologies, Inc. Cathéter d'administration et méthode d'administration d'un implant, par exemple, implantation bronchoscopique d'un marqueur dans un poumon
JP5750879B2 (ja) 2010-12-10 2015-07-22 富士ゼロックス株式会社 検知装置およびプログラム
JP2013005252A (ja) * 2011-06-17 2013-01-07 Elpida Memory Inc 通信装置
CN103311674A (zh) * 2012-03-09 2013-09-18 杭州上立电子科技有限公司 一种eas天线系统及其防盗检测方法
AU2014228514B2 (en) * 2013-03-15 2018-03-01 Sensormatic Electronics Llc Method to drive an antenna coil maintaining limited power source output
CN103475107A (zh) * 2013-08-30 2013-12-25 成都远晟科技有限公司 无线充电方法和无线充电发射天线
CN106535811A (zh) 2014-01-24 2017-03-22 伊卢森特医药公司 包括定位剂的系统和方法
US9919165B2 (en) 2014-05-07 2018-03-20 Varian Medical Systems, Inc. Systems and methods for fiducial to plan association
US10043284B2 (en) 2014-05-07 2018-08-07 Varian Medical Systems, Inc. Systems and methods for real-time tumor tracking
US10078147B2 (en) * 2014-07-17 2018-09-18 The United States Of America, As Represented By The Secretary Of The Army Detector
JP6077036B2 (ja) 2015-03-18 2017-02-08 日本電信電話株式会社 ループアンテナ
JP2017063275A (ja) * 2015-09-24 2017-03-30 株式会社タニタ 無線通信装置、無線通信システム、およびアンテナへの供給電流の位相切替制御方法
US9730764B2 (en) 2015-10-02 2017-08-15 Elucent Medical, Inc. Signal tag detection components, devices, and systems
US9987097B2 (en) 2015-10-02 2018-06-05 Elucent Medical, Inc. Signal tag detection components, devices, and systems
JP6077148B1 (ja) 2016-01-22 2017-02-08 日本電信電話株式会社 ループアンテナ
EP3496623B1 (fr) 2016-08-12 2023-11-01 Elucent Medical, Inc. Systèmes de guidage et de surveillance de dispositif chirurgical
WO2018151610A1 (fr) * 2017-02-14 2018-08-23 Aiguo Hu Transfert de puissance inductive
US10278779B1 (en) 2018-06-05 2019-05-07 Elucent Medical, Inc. Exciter assemblies
WO2020018501A1 (fr) * 2018-07-17 2020-01-23 Sensormatic Electronics, LLC Alimentation électrique avec commande de décalage de phase supportée sans fil pour systèmes acousto-magnétiques
US11688272B2 (en) * 2020-07-27 2023-06-27 Sensormatic Electronics, LLC Systems and methods of alternating transmitter for metal foil detection near moving doors

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB519350A (en) * 1937-12-06 1940-03-21 Standard Telephones Cables Ltd Directional radio antenna arrays
US2207781A (en) * 1938-05-28 1940-07-16 Rca Corp Ultra high frequency antenna
US4135183A (en) * 1977-05-24 1979-01-16 Minnesota Mining And Manufacturing Company Antipilferage system utilizing "figure-8" shaped field producing and detector coils
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations
US4251808A (en) * 1979-11-15 1981-02-17 Lichtblau G J Shielded balanced loop antennas for electronic security systems
US4373163A (en) * 1980-07-14 1983-02-08 I.D. Engineering, Inc. Loop antenna for security systems
US4309697A (en) * 1980-10-02 1982-01-05 Sensormatic Electronics Corporation Magnetic surveillance system with odd-even harmonic and phase discrimination
US4394645A (en) * 1981-09-10 1983-07-19 Sensormatic Electronics Corporation Electrical surveillance apparatus with moveable antenna elements
US4486731A (en) * 1982-06-10 1984-12-04 Sensormatic Electronics Corporation Coil assembly with flux directing means
US4634975A (en) * 1984-09-17 1987-01-06 Progressive Dynamics, Inc. Method and apparatus for producing electromagnetic surveillance fields
GB2180123B (en) * 1984-12-21 1989-01-18 Senezco Limited Transponder systems
US4633250A (en) * 1985-01-07 1986-12-30 Allied Corporation Coplanar antenna for proximate surveillance systems
FR2576715B1 (fr) * 1985-01-28 1987-03-27 Malcombe Jean Claude Procede de realisation d'une antenne miniature a gain
GB8602913D0 (en) * 1986-02-06 1986-03-12 Cotag International Ltd Aerial systems
US5081469A (en) * 1987-07-16 1992-01-14 Sensormatic Electronics Corporation Enhanced bandwidth helical antenna
US4859991A (en) * 1987-08-28 1989-08-22 Sensormatic Electronics Corporation Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation
DE3828691B4 (de) * 1987-08-28 2004-11-25 Sensormatic Electronics Corp., Boca Raton Elektronische Artikelüberwachungsanlage
US4872018A (en) * 1987-08-31 1989-10-03 Monarch Marking Systems, Inc. Multiple loop antenna
FI84209C (fi) * 1988-11-01 1991-10-25 Outokumpu Oy Metalldetektor.
US5049857A (en) * 1989-07-24 1991-09-17 Sensormatic Electronics Corporation Multi-mode electronic article surveillance system
US5126749A (en) * 1989-08-25 1992-06-30 Kaltner George W Individually fed multiloop antennas for electronic security systems
US5061941A (en) * 1990-02-01 1991-10-29 Checkpoint Systems, Inc. Composite antenna for electronic article surveillance systems
US5051726A (en) * 1990-08-14 1991-09-24 Sensormatic Electronics Corporation Electronic article surveillance system with antenna array for enhanced field falloff
US5218371A (en) * 1990-08-14 1993-06-08 Sensormatic Electronics Corporation Antenna array for enhanced field falloff
US5130697A (en) * 1990-10-30 1992-07-14 Sensormatic Electronics Corporation Method and apparatus for shaping a magnetic field
US5321412A (en) * 1991-05-13 1994-06-14 Sensormatic Electronics Corporation Antenna arrangement with reduced coupling between transmit antenna and receive antenna
US5142292A (en) * 1991-08-05 1992-08-25 Checkpoint Systems, Inc. Coplanar multiple loop antenna for electronic article surveillance systems
US5341125A (en) * 1992-01-15 1994-08-23 Sensormatic Electronics Corporation Deactivating device for deactivating EAS dual status magnetic tags
GB9220411D0 (en) * 1992-09-28 1992-11-11 Texas Instruments Holland Noise cancelling in antennae and the like
US5404147A (en) * 1992-10-28 1995-04-04 Sensormatic Electronics Corporation EAS system loop antenna having three loops of different area
US5387900A (en) * 1992-11-19 1995-02-07 Sensormatic Electronics Corporation EAS system with improved processing of antenna signals
US5373301A (en) * 1993-01-04 1994-12-13 Checkpoint Systems, Inc. Transmit and receive antenna having angled crossover elements
US5440296A (en) * 1993-04-29 1995-08-08 Minnesota Mining And Manufacturing Company Coil assembly for electronic article surveillance system
NL9301650A (nl) * 1993-09-24 1995-04-18 Nedap Nv Onafhankelijk antennestelsel voor detectiesystemen.

Also Published As

Publication number Publication date
US6081238A (en) 2000-06-27
EP0829108A4 (fr) 2001-03-14
JP3966556B2 (ja) 2007-08-29
WO1996038877A1 (fr) 1996-12-05
AR002136A1 (es) 1998-01-07
DE69636999T2 (de) 2007-12-13
CN1185865A (zh) 1998-06-24
JPH11506279A (ja) 1999-06-02
BR9609286A (pt) 1999-05-11
US6020856A (en) 2000-02-01
EP0829108B1 (fr) 2007-03-28
EP0829108A1 (fr) 1998-03-18
AU702622B2 (en) 1999-02-25
DE69636999D1 (de) 2007-05-10
AU5871596A (en) 1996-12-18

Similar Documents

Publication Publication Date Title
ES2284172T3 (es) Configuracion de antenas para un sistema electronico de vigilancia de articulos con distribucion del campo de interrogacion mejorada.
ES2403177T3 (es) Sistema de detección, adaptado para la identificación y para el seguimiento de canalizaciones enterradas o de otros cuerpos enterrados en el suelo o embebidos en unas obras de ingeniería civil
CA1113576A (fr) Systeme "antimaraudage" a bobines de champ en forme de "8" et a bobines de detection
KR100431425B1 (ko) 송수신용루프안테나
ES2275315T3 (es) Circuito resonante desactivable.
US7019651B2 (en) EAS and RFID systems incorporating field canceling core antennas
JP3466617B2 (ja) 複数周波数タグ
ES2230669T3 (es) Antena de bucles multiples.
CN101779138B (zh) 使用核四极矩共振进行鞋扫描
US5440296A (en) Coil assembly for electronic article surveillance system
US9412246B2 (en) Systems and methods for intra-zone detection
ES2887124T3 (es) Sistema de control de acceso en áreas restringidas y ambientes industriales
AR031088A1 (es) Disposicion de deteccion y localizacion de elementos protectores de seguridad y sensor de seguridad electronica de articulos
EP0338660A1 (fr) Système anti-vol
ES2476025T3 (es) Detector de metales
ES2383610T3 (es) Sistema de antenas de vigilancia electrónica de artículos para una amplia salida/entrada
CN101529653B (zh) 商品监视系统天线和方法
EP0663657A1 (fr) Système de détection et d'identification antivol
ES2465471T3 (es) Antena de portal
KR100313842B1 (ko) 검출시스템용송수신기
ES2306737T3 (es) Sistema de deteccion e identificacion de objetos opticamente invisibles dotados de codificacion.
CN1142095A (zh) 位置标示系统及用于此系统的位置标示器
EP1138098A1 (fr) Antenne a boucles multiples
WO2007030004A1 (fr) Système et procédé de détection d'objets, et générateur de champ magnétique pour utilisation dans un tel système ou procédé.
WO2007030003A1 (fr) Antenne modulaire et système et procédé de détection d'objets